(P) Intersystem crossing (Q) Vibrational relaxation
(R) Conjugation (S) Molecular planarity.
(A) Electron withdrawing group
(B) Photo decomposition
(C) Increase in temperature
(D) Increase in viscosity.
(A) Conversion of fluorescence to phosphorescence
(B) Enhancement of fluorescence
(C) Absence of fluorescence
(D) Repression of fluorescence
(P) High sensitivity (Q) Low sensitivity (R) High specificity (S) Low specificity
(A) Fluorescence substance have different λmax of excitation and emission
(B) Rigid molecules can only fluoresce
(C) Florescence intensity depends on the intensity of the incident radiation
(D) Every molecule that absorbs in UV region can show fluorescence